Hands-free Mobile Gaming
From: Popular Science - 01/2011 - page 24

This year, expect iPod games that sharpen your gaming skills without  
touching a thing. The XWave headset by PLX Devices uses the stainless- 
steel brain-activity-detecting sensor of NeuroSky, a company in San  
Jose that specializes in brain-computer interfaces, to let you control  
a device with your mind. Nearly 400 programmers have already  
downloaded the XWave software development kit, which allows them to  
create mobile apps that respond to your thoughts and state of mind.

Links:
PLX Devices XWave - $100
http://www.plxwave.com/

NeuroSky
http://www.neurosky.com/